Sliding cutoff saw



April 15, 1952 R, E, STARNES 2,592,970

sLIDING cUToFF sAw Filed oct. 24, 1949 2' sr-IEE'rs-sx-IEET 1 IWI-*m 1m- I f 'I f 22` mmm-ummm" eax 66 62 Ifllllllfhlii-Hm Ray E. .Sfar/res INVENTOR.

WWW 5MM,

April 15 1952 R. E. sTARNEs 2,592,970

SLIDING CUTOFF SAW Filed oct. 24, 1949 2 SHEETS-SHEET 2 N '7 E s' 1k. 40 66 l 42 $26 48 -gr ,73 @-18 7 74 /6/l/ I E Ray E. Sla/nes INVENToR.

Patented Apr. 15, 1952 'UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to a simple and compact sliding cut-off saw the primary object of which is to obviate the necessity of employing the overhead rigging common to power saws of this type, and, with the addition of a guide fence, will eliminate the use of a miter box and hand saw in cabinet and furniture carpentry.

A further object of this invention is to provide a sliding cut-oli saw of the character described which is relatively simple in designand construction, easy to mount upon a table, simple to operate, and safe and accurate in its performance.

Yet another object of this invention is to provide a sliding cut-olf saw comprising an elongated base member, means for securing said base member to a table, a motor operatively connected to a rotatable blade, means slidably and guidingly retaining said motor and blade on said base member for longitudinal movement thereon, and means preventing lateral movement of said motor and blade on said base member.

These, together with various ancillary objects and features of the invention which will later become apparent as the following description proceeds, are attained by the device, a preferred embodiment of which has been illustrated by way of example only in the accompanying drawings, wherein:

Figure 1 is a side elevational view of the device;

Figure 2 is a top plan view of the device;

Figure 3 is a transverse vertical sectional view through the device and looking to the left of Figure 1;

Figure 4 is a transverse sectional view through the base member shown in Figure 6;

Figure 5 is an enlarged transverse vertical sectional view of a portionof the base member illustrating the means for slidably supporting the motor carriage or frame thereon;

Figure 6 is a perspective View of the base member itself;

Figure 7 is a fragmentary top plan view of a portion of the table upon which the base is supported; and

Figure 8 is a sectional view taken substantially in the plane of section line 8 8 of Figure 7.

Specific reference is now made to the drawings. In the several views in the accompanying drawings and in the following specifications similar reference characters indicate corresponding elements throughout.

The device of the instant invention is generally indicated at I0 and consists of two essential elements, namely the base member I2 and the carriage or framel4 supporting the motor and the saw slidably and guidingly upon the base member. The base member consists of a pair of longitudinaL'opposed U-shaped metallic bars I6 and I8 and received between the bars and adjacent the bottom edge thereof is an elongated T-shaped spacer block 20. The spacer block is secured to any suitable table 22 by means of appropriate headed bolts 24 receiving closure nuts 26 at the free ends thereof. Positioned adjacent the free upper ends of the bars I6 and I8r is a pair of metallic spacer strips 28 which are shorter in width than the overall width of the base member. A pair of elongated, longitudinally extending bars 30 and 32 are provided which are secured by means of headed screws 34 to the spacer strips and the' bars I6 and I8, the bars 30 and 32 overlapping the spacer strips to provide longitudinal channels 36 and 38 for a purpose to be later described.

The carriage or frame I4l includes a pair of transversely spaced, longitudinally extending T-shaped bars 40 and 42, one horizontally eX- tending arm 44 and 46 of which extends into each of the channels 36 and 38 as will be readily apparent from the drawings. The vertical arms 48 and 50 slidably engage the outer side faces of the U-shaped bars or plates I6 and I8. At one end, the longitudinal bars 40 and 42 are secured 'together by a transverse member 50 which serves as a handle for moving the frame I4 to and fro of the base member I2. To prevent sidewise or lateral movement of the frame I4 on the base member I0, a transverse bar 52 is secured as at 54 to the forward ends of the longitudinal bars 40 and 42, the same being spaced a substantial distance above the longitudinal bars 30 and 32 of the base member to vclear the same and the headed bolts 34.

Secured adjacent the forward end of the frame I4 is a plate 5B which carries a motor 58, the latter being secured to the plate by means of a bracket or housing 60. The motor 58 is provided with a drive shaft 62 which carries a pulley 64 which is operatively connected by means of an endless belt 66 to a further pulley 68 carried at one end of an arbor 16 which is rotatably supported upon the bars or side members 40 and 42 by means of suitable journals 12. The arbor 10 is threaded at its free end as at 'I4 upon which is received a circular blade 16, the latter being secured on the arbor by means of a lock nut and washer 18. A conventional shield or guard 88 is positioned about the cutter blade 16, and the table 22 is provided with a longitudinal slot 82 for receiving the blade T6.

As will be seen clearly from Figure 7, an ar` cuated Slot 84 is provided in the table and adjacent that slot is a guide bar 86 which is pivoted to the table at one end as at 88 and which is provided at the other end with an aperture for receiving a headed bolt 90 that extends through the slot 84 and the aperture, the bolt being threaded to receive a nut and washer 92. Secured to the table as at 94 is another guide bar 86 which is disposed at the other end of the longitudinal slot 82 and serves as a reference bar as will be readily understood by those skilled in' the art. Thus, if a board 98 were to be out at a desired angle, the guide bar 86 would be posi tioned in the manner shown in Figure 7.

Thus it will be seen that a novel cut-ofi saw is provided which could be manually slid to-and fro on a base member which can be readily secured in turn to a table. The present cut-0E saw, therefore, is simple and compact and operates without the overhead rigging common` to power saws of this type Iii-view of the foregoing description taken in conjunction with the'accompanying drawings-it is believed that aclear understanding of the device willbe quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary,

It is to be understood,A however, that even though Vthere is herein shownv and described a preferred embodiment of the invention the same.

is susceptible to certain changes fully comprehended by'the spirit of the invention as herein described andthe scope of` the appended claims; Having described theA invention, what is claimed as new is:

i. A support fora sliding cut-off saw compris-V ing an elongated base member, means for securing said base member to a table, a frame adapted to support a motor and rotatable blade, means slidably and guidingly retaining said frame on said base member, and means preventing lateral movement of said frame on said base member. said base member including a pair of opposed longitudinal U-shaped bars and said securing means includes a T-shaped spacer block mounted between said bars and bolts securing said block to a table, said second-named means including transverse spacer strips disposed on the upper surfaces of said U -shaped bars, longitudinal plates; secured to said spacer strips, said plates overlapping the side edges of said strips to form longitudinal'channels, said frame having longitudinal T-shaped side members. one horizontal 'arm ofy each of said side members being received in the corresponding one of said channels, the vertical arm of each of said side members bearing against the corresponding one of theouter-surfaces of said U-shaped bars;

2. The combination of claim l whereinsa'd` second-named means includes transverse bars secured across the ends of said supporting-frame;

RAY E. STARNES.Y

REFERENCES CITED The following references. are of; 'recordinztheiw fle Vofthis patent:

UNITED STATES PATENTS* 

